Cooling device



Dec. 4, 1934. A, GLOOR -r AL 1,983,285

COOLING DEVICE Filed oche, 1935 2 Sheets-sheet 5G/ g5@ EL INVENTOR Geolye H. Gloom .l l Na/rcel'd Bar/ke.

Dec,4, -1934- G. A. GLOOR ET Al. 1,983,285

COOLING DEVICE Filed oct. e, 1935 2v sheets-sheet 2 v INVENToR George f7. Gioor,

Marre? anxkey ATTORNEYS. l

lli

Patented Dec. 4, 1934 ,UNITED @@m@ DEVICE George d. Gitaar, born, and Marcel Bauke,

Detroit, Mich.

Application @ctcbcr d, i933, Serial No. 693,229

@ l. frm-a This invention relates tothe dispensing oi liquids and more especially to a device utilizing a solid refrigerant such as solid carbon dioxide for the cooling and aerating of liquids and for eiecting distribution' of such liquids to desire points within the device.

The principal object of the invention is to facilitate the dispensing of liquids.

Another object of the invention is to provide in a single structure, means for cooling, aera'ting,

distributing and dispensing liquids.,

Another object of the invention is to provide a device for cooling and carbonating beverages in which the rate of vcooling and the amount of carbonation of the beverages may be independently controlled. I

Another object of the invention is to provide a device for dispensing beverages from a large Vcontainer and/or from small containers, such as bottles, which device cools only that portion of the beverage which is to be immediately drawn oi.

Another object of the invention is to provide a device for cooling, carbonating and dispensing beverages from large containers and for simultaneously receiving and rapidly cooling smaller quantities of other beverages.

Another object of the invention is to meter liquids as they are dispensed from the device.

Another object of the invention is to provide a device for the dispensing of liquids which employs the pressure produced upon the evaporation` of a solid refrigerant to effect distribution of the liquids to desired points within the device.

Other objects and advantages will become apparent from thefollowing description and appended claims.

For the purpose of illustrating the genus of v the invention, typical concrete embodiments are shown in the accompanying drawings, in which: Fig. 1 is an elevation, with parts broken away and in section, showing a cooling. carbonating and dispensing device constructed in accordance with the principles of this inventionv and assembled in operative relation with respect to a beverage container;

Fig. 2 is a transverse vertical sectionv on an enlarged scale of a. portion of the structure shown in Fig. 1, the section being taken along the line 2--2 of Fig. 1;

Fig. 3 is a transverse horizontal section taken on the line 3 3 of Fig. 2;

Fig. 4 is an elevation-largely diagrammatic in' form, of an alternative structure which may be substituted for parts shownin Figs. 2 and 3;

(QE. 22S-13) Fig. 5 is a horizontal section of the structure shown in Fig. 4, the section being taken along theline 5-5 of Fig. 4;

Fig. 6 is a fragmentary transverse vertical section showing a modication of the structure illustrated in Figs. l,v 2 and 3;

' Fig. 7 is an elevation showing another modication of the structure illustrated in Figs. l, 2 a1zid-3;l

Eig. 8 is an elevation, partly in section, show- 85 ing another modiiied form of the invention; and Fig. '9 is a diagrammatic Iview of a-modied form of the construction shownin Fig. 2.

The invention broadly involves the provision of a'dispensing device including a closed cham- 70 ber fora vaporizable solidl substance; a dispensing means; and a plurality of conduits, preferably arranged in nested relation, one conduit connecting the'interior of a liquid supply container with the interior of said closed cham- 75 ber so that gas evolved by the solid substance will increase the pressure Within the container, and the other conduits connecting the interior of the liquid supply container with ,the dispensing means so that the increased pressure within 8L the container will cause the liquid to ow to the dispensing means. The device is adapted to dispense a wide variety of liquids, such as, for example, beverages, petroleum products, sugar so-' lutions and swups, and liquids employed in chemical processes, in which it is undesirable to expose the liquids to atmosphere. The vapor- `izable solid substance is preferably solid carbon dioxide.- Carbon dioxide is readily absorbed by water and under slight pressures readily effects thecarbonation of the same, but is chemically inert with respect to most liquids. In the event that it is `desired to cool the liquids as well as dispense, or dispense and aerate the same, a

dispensing chamber may be employed in conjunction with the ilrstA mentioned closed chamber and dispensing means so that the vaporizable solid substance is also used to absorb heat 'from the liquid to-reduce the temperature of the latter. I 100 Referring to Fig. 1 foi. the drawings, 10 designates a dispensing unit adapted to be connected by a plurality of conduits 11 and 12 to a liquid s upplycontainer 13. ,The conduits 11 and '12 are preferably arranged in nested relation 105 so that they may enter the liquid supply container through a single opening 14. 'Ihe dispensing device 10 is provided with a dispensing means 15 in the'iorm of a faucet or tap and a metering device 16 maybe`employed in con- 110 junction with this dispensing means to measure the quantity of liquid delivered from the dispensing device.

Reference may now be had to Figs. 2 and 3, in which the dispensing device 10 is shown more in detail. This device comprises an outside container 17 suitably insulated from outside temperatures, as by insulating material 18, and a smaller container 19 disposed within the container 17. The insulating material 18 may be covered by a sheet metal jacket 18'. The top of the inside container 19 is provided with an outwardly directed flange 21 which extends over a simiiarly directed flange 20 on the outside container 17 and these flanges are bolted together by means of bolts 22. The space between the outside container 17 and the inside container 19 is divided into two separate chambers 23 and 24 by means of partition members 25 engaging the inner walls of the sides and bottom of the outside container 17 and the outer walls of the sides and bottom of the inside container 19. The inside container 19 is provided with a cover in the nature of a plate 26 which is secured to the flange 21 of container 19 by means of wing nuts 27 threaded on bolts 28 which are suitably fastened to the ange 21 at spaced intervals. A gasket `29 positioned between the engaging surfaces ofthe plate 26y and the container 19 serves to al the joint therebetween. A gasket 9, of heat insulating material, may be interposed between the iiange porti-on 21- and the body of the container 19 to prevent conduction of heat from the top of the device to the-interior thereof.

The outer surface of the container 19 is provided with a' plurality of protuberances in the form of iin-like structures 3l which extend into the chamber 23 at the bottom and on three sides of the inner container. A plurality of similar n-like structures 32 extend into the smaller chamber 24. The cover plate 26 is provided with a pressure relief valve 33 which includes a ball valve element 34 biased against a seat 34' at the mouth of an'opening 35Aextending through the p late 26 by means of -a helical spring 36. A screw 37 serves to adjust the tensionrof the spring 36. The bottom vof the outer container, is provided with a downwardly extending tube 38 which projects through the insulating material 18 and jacket 18'. The tube 38 is provided with a short horizontally extending tube 39 extending through a side wall thereof. A conduit 41 is threaded at one end into a threaded hole communicating with a passage 42 extending through the wall of :the container 19 and to the interior thereof, the conduit 41 extending downwardly ,through the chamber 23, through va suitably packed Vorifice 43 in the bottom wall of the container 19 and through lthe insulating material 18, or optionally extending from the cover plate 26 externally of the dispensing unit to the conduit -11. The conduit 41 is provided with a. right angle bend and a horizontal portion fwhich extends to the threaded end of the tube 39 to which it is secured by means of a threaded sleeve 45 cooperating with a suitable shoulder 47 formed on the end of the conduit. A one-way valve 46 is provided in the tube 39 and allows passage of gases or-liquids from the conduit 41 to the tube 39 and preventslpassage of gases or liquid in the opposite direction. This one-way valve may be of any tip or a bali and spring valve somewhat as shown with reference to the relief valve 33. The inner end of the tube 39 is in the form of an elbow threaded at the bottom wall thereof to receive the above mentioned tube 12 to afford communication between the interior of the container 19 and the interior of thesupply container 13. The lower end of the tube 38 is threaded, as indicated at 48, to receive the above mentioned tube 12 which communicates between the interior of the supply container 13 and the chamber 23.

The outer container 17 and inner container 19 are made from materials which are chemically inert with respect to the liquid to be handled by the dispensing device. The inner container 19 is provided with comparatively thick walls of heat conducting material and the ns 31 are made integral with these walls and of the same material, such as for example, food aluminum. The bottom wall 50 and side wall 51, the right hand side wall as viewed in Figs. 2 and 3, are made of still greater thickness to increase the heat capacity of these walls. As previously pointed out, the wall 51 forms a wall of the chamber 24 and has the ns 32 integral therewith. A refrigerant holder 52 is disposed within the inner container 19 and comprises a basketlike carrier having solid, perforated or mesh walls and bottom of thin sheet material. The holder is suspended from the top by a bail 53 provided for elevating or lowering the refrigerant holder to vary the space between the bottom wall 54 of the holder, on which the refrigerant is adapted to rest, and the massive bottom wall 50 of the inner container 19. A vaporizable solid refrigerant 55, such as solid carbon dioxide is arranged in the holder 52 resting on the bottom wall 54 thereof. As the refrigerant 55 evaporates the space between the refrigerant and the side walls of the inner` container 19 increases. However, the space between the refrigerant and the massive bottom wall 50 of the inner container 19 remains fixed unless intentionally changed. To change the latter'space, the bail 53 is provided with an elevator rod 57 extending upwardly through the cover plate 26. The upper end of the elevator rod 57 is headed as indicated at 56 and a hand lever .58 provided with a lug 59 and journaledin the elevator rod 57 cooperates with a cam 69 formed on the cover plate 26 to adjust the elevation of the holder relative to the massive bottom wallv50 of the container 19. The cam 60 may be provided with a steppedcam surface 61 so that the holder 52 can be held in any one of a plurality of elevated positions. If desired thev walls of/the container 19 may be porous so that the carbon dioxide evolved from the refrigerant may escape slowly to the chamber 23. 'I'he gas would in passing through the porous walls of aluminum or similar material be vin the form of minute bubbles; This Lwould be desirable in the event that the liquid cooled was abeverage such as beer in which minutely formed bubbles form a finely divided 24 is visible from the outside of the dispensing device. A pressure gauge 65 is arranged in comf indicate the pressure within the latter.

In the operation of the dispensing unit the outer tube 12 is sealed within the opening 14 of a supply container 13 and a vaporizable lrefrigerant such as solid carbon dioxide in place within the holder 52 and rests on the bottom Wall 54 thereof.. Since the refrigerant 60 in holder 52, upon evaporation recedes from the side walls of container 19, the absorption of heat by the refrigerant through these walls decreases slightly as the refrigerant evaporates, but the conducting wall 54 allows the refrigerantl to absorb heat at a uniform rate from the b ottom wall 50 of the inner container 19 unless varied by the manual means described. 'I'he thick wall of the inner container 19 and the fins 31 and 32 integral with these walls tend to maintain the distribution of heat within all parts of the inner container 19 uniform. The.

rate of absorption of the refrigerant through the bottom walls 54 of the holder 52 is regulated by the air space between the walls 54 and 50 which is in turn controlled by the rotative posi- -tion of control rod 57 and handle 58. The absorption of heat by, the refrigerant contained within the holder 52 causes evaporation of the refrigerant and an inrease of pressure within the interior of the inner container 19. The gasevolved from the refrigerant passes through the conduit el; valve 46 and conduit 11 to the interior of the supply container 13 so that the in-v crease of pressure within 'the inner container 19 causes a corresponding increase in pressure n within the supply container 13 and forces liquid contained in the latter up through the outer tube 12 to the' chamber 23 provided between the Walls of the vinner and outer containers 19 and 17. The liquid thus forced into the chamber 23 contacts the ns 31 and the exterior walls of the inner container 19- to the left of the partition 25, as viewed in Fig. 2.

This liquid is rapidly cooled by contact with` .the cooled walls of the container 19 and may be` dispensed through the delivery means 15 in a cooled condition. vThe metering device 16 measures the quantity of liquid delivered through the dispensing means 15. The gas evolved from vthe refrigerant aerates the liquid contained within the beverage supply containerl3 in the event that the gas and liquid are such that onemay be absorbed within the other. in the event that the' liquid dispensed is a beverage, solid carbon dioxide is employed as the refrigerant and the carbon dioxide gas is readily absorbed by the liquid contained Within the supply container 13 so that the beverage delivered by the dispensing means 15 is carbonated as well as cooled. The

pressure gauge 65 communicates with the interior of the inner container 19 and indicates the pressure of the gas evolved from the refrigerant so that upon a. predetermined pressure within the refrigerant chamber theblade 56 maybe ro'- tated to change the air space between Vthe bottom wall 5d bf' the holder and the wall 50 of the inner container so that the rate of evolution of y gas from therefrigerant may be controlled. -It

is noted that the elevation of the holder 52 could becontrclled by pressure control means responsive to the pressure within the refrigerant chamber or by thermostatic means responsive to the temperature within the liquid dispensing chamber 23, instead of by the manual control handle 58 as shown. In the event' that the to the atmosphere. 'I'he one-way valve 46 prevents liquid from the supply container 13 from being forced-into the conduit -41 and into the f interior of the inner container 19.

The chamber 2/4, provided between the inner and outer containers 19 and 17 and to the right of the partitions 25 as indicated ln Figs. 2 and 3, serves merely as a cooling and dispensing Ychamber for an additional liquid. This liquid may be poured into the top of the chamber 24 and contacts the fins 32 and the exterior surface of the wall 51, integral with the bottom wall 50 of the inner container 19, so that very rapid cooling' of the liquid may be attained. The additional liquid may be dispensed by means of; a faucet or tap 66, as indicated in Fig. 3. 'I'he upper end of the chamber 24 -may be closed by a hinged door 67 faced on'the underside with a lResilient material 68 to seal and insulate the door. The large mass of metal provided by the fins 32, the side wall 5l and the bottom wall 50 'of the inner container 19 will absorb heat very rapidly from this additional liquid so that this may be cooled to the desired temperature for beverage purposes in a period of a few seconds. The transparent window 62 is provided for display purposes and to indicate the quantity of liquid within the chamber 23.

Reference now may be had to Figs. 4 and 5 in 'which an alternative construction of the 110 chamber 24 and cooling flns contained therein, is disclosed. In this construction, instead of the ns 32, massive bodies of metal 70 are provided integral with the wall 51 of the inner container 19 and shaped to provide stepped 115 passages 71 therebetween for the passage of a liquid from the top 'to the bottom of the chamber-24.1. These stepped passages not only insure greater area of contact of the liquid with the masses of metal 70 but alsoretard the flow from 120 top to tettoia of the chamber. 24 so that extremely rapid cooling of the beverage may be obtained. The same filling door 67, display window 62 and delivery means 66 may be provided as in the previous embodiment. The heavy 525 masses of metal 70 are cooled by the refrigerant contained within the holder 52 as previously indicated. Since the masses 79 are integral with the thickened wall 51 which in turn is integral with the bottom wall 50 of theinner con- 130 tainer `19, very rapid absorption of heat from the liquid by the masses 76 may be obtained so` that the liquid will be cooled to suitable temperatures for beverage while being poured. through the chamber 24, in a period of about three seconds.

Referring to Fig. 6, a modified construction of the inner and outer containers 17 and 1 9.'

los

,is disclosed. In this embodiment the inner conlas Reference may be nowj had to Fig. 7 which discloses another modified form of dispensing unit l0' corresponding with the dispensing unit disclosed in Figs..12 and 3 except in that the conduit 4l', corresponding to the conduit 41 of the previously described embodiment, is brought to the exterior of the dispensing unit. A pressure chamber 75 and a reducing valve 76 are interposed in the conduit 41. The pressure reducing valve 76 may be provided with an adjusting screw for varying a minute orifice therein so that the reduction of pressure by the valve 76 may be controlled. v A hand Wheel 77 is provided on the adjustment screw for manually controlling the area of the orice to control the pressure within the liquid supply chamber, not shown, and the pressure within the dispensing chamber 23 of the unit l0. The operation of this device is essentially the same as that of the previously described embodiment except that a pressure of approximately 100 pounds per square inch may be built up within the pressure chamber 75 and a reduced vpressure delivered to the liquid supply container by means of the valve 76 so that the pressure in this container is in the neighborhood of eight to ten pounds per square inch. v

Referring to Fig. 8, a still further embodiment of the-invention is disclosed in which the conduits 1l -and 12 connect a reserve supply container, not shown, to a refrigerant container 80 and to a dispensing conduit 81' provided with suitable delivery means, not shown. The refrigerant chamber 80 contains approximately a half pound of a refrigerant, such as carbon dioxide, and is provided with a screw `cap 82 for closing its upper end. A one-way valve 46' is provided vin the connection 83 between the refrigerant chamber 80 and the conduit 11 to permit passage of gas carbon dioxide evolved ,from the refrigerant contained Within the chamber 80 to the conduit 11 but to prevent passage of'lgases or liquid from the conduit 11 to the refrigerant chamber V80. This unit will carbonate a beverage contained within a beverage supply container, corresponding to the container 13 ,of the first described embodiment and will force liquid containedtherein upwardly througln the conduit 12 to the delivery conduit 81 and thence to dispensing means. The carbonation of the liquid will be effected in the same manner as' in the first described embodiment. This unit is intended to be employed for pumping a liquid 'and for carbonating the same but is not intended as a cooling unit. This unit would be employedin connection with a heat insulated container, corresponding to 13 of the rst described embodiment, and containinga beverage which has4 already been refrigerated.

Reference may be had to Fig. 9 in which another modification of the construction shown\` in Fig. 2 is illustrated. inner and-outer containers 99 and 97 correspond to containers 19 and 17 of the rst embodiment. The container 99, however, has a thin bottom wall 50 extending into a dispensing, chamber 23'. A refrigerant basket or holder 52 is arrangedfor vertical movement' Within the container 99 and adapted to be brought into contact or separated from the thin bottom wall 50. The holder 52 is provided with a bail 53 and elevating rod -57 as before, and is adapted to be elevated or lowered by the control handle 90 of a dispensing faucet 15'. An operating arm 91 -is fixed against movement relative to the handle In this embodiment 90 and connected by a link 92 to a lever 93 pivoted at an intermediate point 94 to the top of the dispensing unit. The free end of the lever 93 makes a sliding connection with the elevating rod 57. With the handle 90 arranged in a vertical position, as illustrated the faucet 15 is closed and holder 52' elevated above the thin wall 50. Rotation of handle 90 away from the dispensing unit maintains the faucet 15 in closed condition but lowers the holder 52 until it rests on the thin bottom wall 50 allowing the refrigerant in holder 52 to absorb heat from a liquid in dispensing chamber 23'. After the liquid has cooled for a few seconds the handle 90 may be rotated toward the dispensing unit and beyond its vertical position to elevate the holder and open faucet l5' to dispense the cooled beverage or liquid.

As many changes could be made in the above constructions and many apparently widely different embodiments of this invention could be made without departing from the spirit thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. In beverage cooling, aerating, and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber, a conduit communicating between the interiors` of said chamber and said container, a closed dispensingl chamber Aarranged adjacent said refrigerant chamber so as to be cooled thereby, a conduit communicating between the interiors of lsaid container and said dispensing chamber, and solid carbon dioxide di'sposed in said refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxidepasses through said first named conduit to said container to aerate the beverage therein and to cause flow of such beverage from said container to said dispensing chamber where the beverage is cooled by the solid carbon dioxide in said refrigerant chamber.

2. In beverage cooling, aerating and dispensing apparatus, the combination of a source of supply including a closed container, aclosed refrigerant chamber, a conduit communicating between the interiors of said chamber and said container, a closed dispensing chamber arranged in surrounding relation about said refrigerant chamber so as to be cooled thereby, a conduit communicating between 4the interiors of said container and said dispensing chamber, and solid carbon dioxide disposedv in said refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxide passes through said first named conduit to said container to aerate the beverage therein and to cause ow of such beverage from said container to said dispensing chamber where the beverage is cooled by the solid carbon dioxide in said refrigerant chamber.

3. In beverage cooling, aerating and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including a wall comprising a large mass of .heat conducting material, a conduit communicatingwith the interior of said chamber and said container, a dispensing chamber including said large mass of heat conducting material as a Wall thereof for cooling the same, a conduit communicating between the interiors of said container and said dispensing chamber, and

Adi)

solid carbon dioxide disposed in said refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxide passes through said first named conduit to said container to aerate the beverage therein and to cause ow of such beverage from said container to said dispensing chamber where the beverage is cool/ed by the solid carbon dioxide in said refrigerant chamber.

4. In beverage cooling, aerating and dispensing apparatus, the combination of Aa source of supply including a closed container, a closed refrigerant chamber including a wall comprising a large mass of heat conducting matal, a con duit communicating with the interi rs of said chamber andsaid container, a dispensing chamber including said large mass of heat conducting material as a wall thereof for cooling the same, fins of heat conducting material on the exterior Wall of said refrigerant chamber and integral` therewith, a conduit communicating between the interiors of said container and said dispensing chamber, and solid carbon dioxide disposed in said refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxide passes through said first 'named conduit to said container to aerate the beverage therein and to cause flow of such beverage from said container to said dispensing chamber wherethe beverage is cooled by' the solid carbon dioxide in said refrigerant chamber.

5. In beverage cooling, aerating and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including chambered walls of heat conducting material, a low freezing point liquid in said chambered walls, a conduit communicating between the interiors `of said chamber and said container, a closed dispensing chamber arranged adjacent ysaid refrigerant chamber so as to be cooled thereby, a conduit communicating between the interiors of said container and said dispensing chamber, and solid carbon dioxide disposed in said refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxide passes through said rst named conduit to said container to aerate the beverage therein and to cause ow of such beverage from said container to said dispensing chamber where the beverage is cooled by the solid carbon dioxide in said refrigerant chamber.

6. In beverage cooling, aerating and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including walls comprising a iarge mass of heat conducting material, a conduit communicating with the interiors of said chamber and said container, a dispensing chamber including a portion of said large mass of heat conducting material as a wall thereof for cooling the same, a conduit communicating between the interiors of said container and said dispensing chamber, a second dispensing chamber including another portion of said large mass of heat con ducting material as -a wall thereof, and masses of heat conducting material lintegrally joined with said rst named mass and arranged in the interior of the latter chamber so as to provide passages therebetween for the ow of a beverage whereby such beverage may be rapidly cooled, and solid carbon dioxide disposed in said refrigerant chamber and adapted to generate gaseouscarbon dioxide, whereby the gas carbon dioxide passes through said first named vlarge mass of heat conducting material, a con conduit to said 'container to aerate the beverage therein and to cause flow of such beverage from said container to said first named dispensing chamber where the beverage is cooled by the solid carbon dioxide in said refrigerant chamber 7. In beverage cooling, aci-ating and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including walls comprising la duit communicating with the interiors of said chamber and said container, a dispensing chamber including a portion of said large mass of heat conducting material as a wall thereof for cooling the same, a conduit communicating between the interiors of said container and said dispensing chamber, a second dispensing chamber including a portion of said large mass of heat conducting material as a wall thereof and masses of heat conducting material integrally joined .with said rst named mass and arranged Vin the .interior of the latter chamber so as to provide irregular passages therebetween for rapidly cooling a beverage passed therethrough, and solid carbon dioxide disposed in the refrigerant chamber and adapted to generate gaseous carbon dioxide, whereby the gas carbon dioxide passes through said iirstlnamed conduit to said supply container to aerate the beverage therein and to cause iiow of such beverage from said container to said dispensing chamber where the beverage is cooled by the solid carbon dioxide in said refrigerant chamber.

8. In beverage cooling, aerating and dispensing apparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including walls comprising a large mass of heat conducting material, a dispensing chamber including a portion of said large mass of heating material as a wall thereof for cooling the same, a conduit communicating between the interiors of said container and said dispensing chamber, a second dispensing chamber including another portion of said large mass as a wall thereof and a part of said another portion of said large mass projecting into the interior of said second dispensing chamber and provided with angular passages therethrough for cooling a liquid passed therethrough, and soiid carbon dioxide disposed in said refrigerant chamber and adapted to generatev gaseous carbon dioxide, whereby the gas carbon dioxide passes through said first named conduit to said supply container to aerate the beverage therein'and to cause flow from said suppiy container to said first named dispensing chamber where the beverage is cooled bythe solid carbon dioxide in said refrigerant chamber. A

9. In beverage cooling, 'aerating and dispensing aapparatus, the combination of a source of supply including a closed container, a closed refrigerant chamber including a bottom wall of heat conducting material, a refrigerant holder arranged within the Irefrigerant chamber, solid carbon dioxide disposed in said holder and 14,0v

adapted rto generate gaseous carbon dioxide,

Ymeans for adjusting the bottom wall of said l a conduit communicating between thehinteriors of said container and said dispensing chamber,n

vrwhereby the gas carbon dioxide passes Ythrough y 'so conduit communicating between the interiors of said refrigerant chamber and said container, a closed dispensing chamber arrangedY adjacent said refrigerant chamber so as to be cooled thereby, dispensing rreans for delivering beverageefrom said dispensing chamber, means operable by said dispensing means for;l adjusting the bottom wall of said holder relative to the bottom wall of said refrigerant chamber to regulate the transmission of heat from the bottom Wall of said refrigerant chamber to the refrigerant WithinY said holder, and a conduit communicating betweenthe interiors of said supply container and said dispensing chamber.

Y GEORGE A, GLOOR.

MARCEL BAN'KE.

aai

ion:

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